Hook: 2xl or 3xl nymph (I use 2xl a lot)
Thread: 6/0 you choose the color
Tail: Marabou
Body: Dubbing of your choice
Hackle: Hen neck or hen saddle
My flies are tied using only hen saddle; however, Rich ties his using both hen neck and hen saddle. He covers the rear 2/3rd of the shank with hen neck, which is a longer feather, and the front 1/3rd with hen saddle. Hen saddle feathers are short and very webby. I use the saddle because it is cheaper and more webby/dense. Regardless of how you choose to tie it, this fly catches anything that swims.